Safety wheel for vehicles



Sept. 25, 1934. D, STOUBER SAFETY WHEEL FOR.VEHICLES Filed Sept. 30. 1953 j- INVENTOR DAVID STOUBER BY MW ATTORNEY Patented Sept. 25, 1934 I 1,974,669-

v UNITED'TSTATES PATENT OFFICE hpplicationseptemher 30, 1933, Serial No. 691,576

" 3 Claims. (01. 280- 150) This inventionrelates to new and useful im- Fig. 6 is a horizontal sectional view taken on provements in safety wheels for vehicles. the line 6--6 of Fig. 1. V The invention has for an object the provision Fig. '7 is a fragmentary vertical sectional view of several safetywheels associated with the regtaken on the line "7-7 of Fig. 6.

" ular wheels of a vehicle and arranged sothat Fig. 8 is a horizontal enlarged sectional view 9.

when the tires of the vehicle become deflated the taken on the line 8-8 of Fig. 4. vehicle may still travel along upon the safety a The safety wheels according to this invention wheels. l i r are used in combination with a vehicle having a -Still furtherthe inventionpropose's'so arrangchassis 10 associated with a front axle 11 and "'10 ing the safety wheels that-they naturally take a rear axle 12, with inflated tire wheels 13 upon 65 up the load of the car when the regular wheels these axles. The wheels 13 upon the front of the become inoperative, for example, when the tires chassis are mounted for steering in a convenbecome deflated. a tional manner by arms 14 connected together by t Still further the invention proposes arranging a link 15 and controlled by linkage 16.

15 f ont safety wheels in a manner so as to steer The safety wheels according to this invention automatically according to conventional steering are associated in the vi i it f h of th d of the vehicle sothat the vehicle may be under flatable wheels 13. More particularly there is 1 e fect Co t w t the a y Wheels in pe one safety wheel for each of the wheels 13. The ation. rear safety wheels are indicated by the numerals Still further the invention. contemplates an 17 and the front safety wheels by numerals 18. 75 arrangement whereby the a y W ee s may be Each of the rear safety'wheels 17 is mounted lowered to a position so as to take all of the load upon a fork 19 which is swiveled upon the lowof the vehicle, allowing the vehicle to be moved er end of a stem 20 mounted through a clamp I upon'these wheels. f i 21 engaged upon the axle 12. An expansion Still further the invention proposes an arspring 22 acts between the clamp 21 and a head 80 rangement whereby when all the safety wheels 23 upon the top of the stem so asto normally are lowered as called for in t e p vious pa aurge the stem upwards. A means is provided for graph the vehicle may be moved in all direcmoving the stem 20 downwards to engage the t up these Wheels, that wa d safety wheels 17 against the ground when debackwards, sidewards or in other direction. sired.

Still further the invention proposes the con- The means mentioned in the end of the last struction of a device as mentioned which is simparagraph comprises a follower 24 engaging the P a durable and Which y be manufactured head 23 of the stem and threadedly engaged upon and sold at a reasonable cost. a screw 25 rotative in a frame 26 mounted upon "'35 For further comprehension of the invention, th clamp 20, A k t 27 i fixed upon th 9 0 350 Fig. 3 is a fragmentary enlarged Sectional stems upwards. In this raised position the bushand of the objects and advantages thereof, refr w 25.

erence will be had to the following description E ch of the front safety wheels 18 is mountand ae p y drawing, and t0 the ppended ed upon a forked shaped member 30 which is claims in which the various novel features of the fixed on the l w r end of the stem 31, Th the invention are more particularly set forth forks so of the front Wheels 13 can move only 95 In the aec0mp a y drawmg formmg as the stem 31 moves. Each stem 31 engages ter p 0f thls dlselosureithrough a clamp 32 fixed upon the front axle 1 is rear elevational View Vehicle 11. Each of the stems 31 is provided with a equlpped with safety wheels according to this square portion 33 engaged by a bushing 34 invention, a portion of the body of the vehicle ranged between certain parts of the clamp 190 being broken e to 9 int'irior parts The upper end of the stems 31 are provided with Fig. 2 is a horizontal sectional view as though the heads 35 and expansion springs 36 acting taken on the line 22 of Fig. 1, showing in particular a detail of the chassis of the vehicle. between the clamps 32 for mrmauy the 105 view taken on t line f Fig ings 34 engage the square portions 33 so that Fig, 4 i fragmentary enlarged Sectional the stems may be turned as the bushings turn. view taken on the line 4- 4 of Fig 2, An arm 3'7 pro ects from each of the bushings Fig. 5 is a fragmentary detailed view of a porand a link 38 connects the arms for unitary tion of Fig. 4. ot I a w Another link 39 connects the link 38 with the link 15 of the mechanism for steering the front wheels. A means is provided for lowering the front safety wheels. This means is identical to the means previously described relative to the rear wheels and the corresponding parts may be recognized by the same reference numerals.

A chain 40 connects each of the sprockets 2'7 together so as to move simultaneously. This chain passes between a stationary block 41 mounted upon the chassis 10 and a driver gear 42 fixed upon a spindle 43 rotatively mounted and equipped with a hand wheel 44 at a pointin the vehicle convenient for the operator to turn. The operator may turn the wheel 44 for causing all of the sprockets 2'? to turn simultaneously.

Normally all of the safety wheels are in their raised positions. the vehicle blow out then the particular wheel deflates to a point where the safety wheel touches the ground and takes its load. Thus the vehicle may proceed. until it is convenient to repair the blown out tire. Since the front wheels 18 are connected up with the steering mechanism of the vehicle, there is perfect control of the vehicle.

If it is desired to lower the safety wheels so as to take the load from the regular wheels to allow the car to be pushed along thereon it is merely necessary that the wheel 44 be rotated to move the chain 40 and sprocket 27. This will cause the screws 25 to rotate to lower the followers 24 and depress the stems which lowers the safety wheels. Particular attention is called to the fact that as the front safety wheels are lowered the squareportion 33 from the stems 31 disengage from the bushings 34 so that the stems 31 are free to rotate. With this arrangement it is possible to turn each of the safety wheels transversely so that the car may he pushed sideways. This will be of advantage to place the car in a space too small to allow natural parking therein.

While I have shown and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications com- Should any of the tires of ing within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim is new and desire to secure by United States Letters Patent is:-

1. In combination with the chassis of a vehicle having axles and defiatable tires, a safety wheel structure in the vicinity of each deflatable tire, comprising a clamp engaged upon the axle, a stem through said clamp, a wheel mounted upon the lower end of said stem, resilient means connecting between said stem and clamp for urging the stem into a raised position, means for moving said stem downwards for lowering the wheel to the ground said stem being provided with a square portion slidably non-rotatively engaging a bushing, and steering mechanism connected with said bushings.

2. In combination with the chassis of a vehicle having axles and defiatable tires, a safety wheel structure in the vicinity of each deflatable tire, comprising a clamp engaged upon the axle, a stem through said clamp, a wheel mounted upon thelower end of said stem, resilient means connecting between said stem and clamp for urging the stem into a raised position, means for moving said stem downwards for lowering the wheel to the ground, said stem being provided with a portion slidably non-rotatively engaging a bushing and steering mechanism connected with said bushings. 4

3. In combination with the chassis of a vehicle having axles and defiatable tires, a safety wheel structure in the vicinity of each deflatable tire, comprising a clamp engaged upon the axle, a stem through said clamp, a wheel mounted upon the lowerend of said stem, resilient means connecting between said stem and clamp for urging the stem into a raised position, means for moving said stem downwards for lowering the wheel to the ground, said stem being provided with a portion slidably non-rotatively engaging a bushing and steering mechanism connected with said bushings, said bushing being held by said clamp against longitudinal motion while permitted to turn. 7

DAVID STOUBER.

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